Lighting system and method for plant growth
AssigneeSignify Holding B.V.
InventorsSABRINA ALMEIDA DE CARVALHO, CELINE CATHERINE SARAH NICOLE, MARTIN BOEREMA, ESTHER DE BEER
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Abstract
Systems and methods for providing horticulture light to a cannabis plant during a flowering stage of the cannabis plant are disclosed, wherein a spectral power distribution and/or an intensity of the horticulture light is controlled such that an amount of deep red photons in the horticulture light emitted by a horticulture lighting device is at or below a white tip induction threshold during at least a first week of the flowering stage of the cannabis plant.
Claims15
A method of providing light to a cannabis plant during a flowering stage of the cannabis plant, said method comprising;
- providing a horticulture lighting device for illuminating the cannabis plant with horticulture light, the horticulture lighting device comprising at least one deep red light source configured to emit deep red photons in a wavelength range from 650 nm to 699 nm;
- controlling a spectral power distribution and/or an intensity of the horticulture light such that an amount of deep red photons in the horticulture light emitted by the horticulture lighting device is at or below a white tip induction threshold during at least a first couple of weeks of the flowering stage of the cannabis plant and thereafter controlling the spectral power distribution and/or intensity of the horticulture light such that the amount of deep red photons in the horticulture light emitted by the horticulture lighting device changes towards levels of deep red above the white tip induction threshold;
- and
- illuminating the cannabis plant with said horticulture light.
A controller for controlling a horticulture lighting device for emitting horticulture light to a cannabis plant during a flowering stage of the cannabis plant, the horticulture lighting device comprising at least one deep red light source configured to emit deep red photons in a wavelength range from 650 nm to 699 nm,
- wherein the controller as adapted to control the at least one deep red light source of the horticulture lighting device such that an amount of deep red photons in the horticulture light emitted by the horticulture lighting device is at or below a white tip induction threshold during at least a first week of the flowering stage of the cannabis plant and thereafter control the at least one deep red light source of the horticulture lighting device such that the amount of deep red photons in the horticulture light emitted by the horticulture lighting device changes towards levels of deep red above the white tip induction threshold.
(canceled)
Dependencies are inferred from the claim text.